Footage of women working in a labratory, using beakers, test tubes and various measurements while taking notes. A woman does tests on abrasion and durability on stockings, by running them against rollers to stress them. A woman feeds a lab rat vitamins to record their reactions and see how it may benefit them. Narrated by Katherine Hepburn, she describes how women have taken a vital in important role in doing this kind of research for the war effort.